The Power, instantaneous component computes the three-phase instantaneous active power P (in watts) and reactive power Q (in vars) associated with a periodic set of three-phase voltages and currents.

The output signal Q(t) is accurate only for balanced and harmonic-free three-phase voltages and currents.

The output is held constant to the specified Initial active power and Initial reactive power values for one cycle of the specified fundamental frequency.

Symbol

Mask Parameters

Name	Description	Unit	Variable = {Possible Values}
Description	Use this field to add all kinds of information about the component		Description = {'string'}
Fundamental frequency	Fundamental frequency used for the calculation of the active power (P) and the reactive power (Q). This value cannot be modified during the simulation	Hz	Fnom = { [0, 1e12] }
Initial active power	Initial active power value of the magnitude of the output signal for the first simulation cycle. This value cannot be modified during the simulation	W	Pinst_init = { [-1e64 1e64] }
Initial reactive power	Initial reactive power value of the magnitude of the output signal for the first simulation cycle. This value cannot be modified during the simulation	Var	Qinst_init = { [-1e64 1e64] }

Input/Output Signals

Name	Description	Type
Vabc	Vectorized signal containing phase-to-ground voltages (Va, Vb and Vc)	Input
Iabc	Vectorized signal containing phase-to-ground currents (Ia, Ib and Ic)	Input
Pinst	Signal containing the instantaneous active power resulting from the voltage and current signals	Output
Qinst	Signal containing the instantaneous reactive power resulting from the voltage and current signals	Output

Sensor Descriptions

Name	Description	Unit
Vabc[a]	Signal containing the voltage of the phase A	V
Vabc[b]	Signal containing the voltage of the phase B	V
Vabc[c]	Signal containing the voltage of the phase C	V
Iabc[a]	Signal containing the current of the phase A	A
Iabc[b]	Signal containing the current of the phase B	A
Iabc[c]	Signal containing the current of the phase C	A
Pinst	Signal containing the instantaneous active power resulting from the voltage and current signals	W
Qinst	Signal containing the instantaneous reactive power resulting from the voltage and current signals	Var

Internal Circuit of the Component

Example Model

This example demonstrates the usage of Instantaneous power block. A 3-phase 240V, 60Hz source connected to a 3kW and 0.6kVar load is demonstrated.

Note that the following demo requires that users edit the ScopeView template, and replace the existing .oprec data source with the data generated during the simulation.

HYPERSIM Documentation

Power, instantaneous